Coupling enhancement of split ring resonators on graphene

Date
2014-12
Advisor
Instructor
Source Title
Carbon
Print ISSN
0008-6223
Electronic ISSN
Publisher
Pergamon Press
Volume
80
Issue
Pages
351 - 355
Language
English
Type
Article
Journal Title
Journal ISSN
Volume Title
Abstract

Metallic split ring resonator (SRR) structures are used in nanophotonics applications in order to localize and enhance incident electromagnetic field. Electrically controllable sheet carrier concentration of graphene provides a platform where the resonance of the SRRs fabricated on graphene can be tuned. The reflectivity spectra of SRR arrays shift by applying gate voltage, which modulates the sheet carrier concentration, and thereby the optical conductivity of monolayer graphene. We experimentally and numerically demonstrated that the tuning range can be increased by tailoring the effective mode area of the SRR and enhancing the interaction with graphene. The tuning capability is one of the important features of graphene based tunable sensors, optical switches, and modulator applications. © 2014 Elsevier Ltd. All rights reserved.

Course
Other identifiers
Book Title
Keywords
Carrier concentration, Electromagnetic fields, Graphene, Optical conductivity, Optical resonators, Optical switches, Resonators, Tuning effective mode areas, Important features, Reflectivity spectra, Sheet carrier concentration, Split ring resonator, Tunable sensors, Tuning capability
Citation
Published Version (Please cite this version)